Panoramic oameea



{N-o Model.)

2 Sheets-Sheet 1. f F. P. fDUMKE.

PANORAMIG CAMERA.

Patented July 24 1894 (No Model.) w 2 Sheets-Sheet 2.

F. F.' DUMKE. PANORAMIG CAMERA.

No. 323,333. Patented July 24, 1394.

A UNITED STATES TENT FRANKE F. DUMKE, OF MILWAUKEE, WISCONSIN, ASSIGNORTO WILLIAM H. KIRK, OF SAME PLACE.

PANORAlVl EC CAM ERA.

SPECIFICATION forming part of Letters Patent No. 523,336, dated July 24,1894. Application led February t, 1894. sain no. 499.165. (No model.)

To a/ZZ whom t may concern.'

Be it known that I, FEANKE F. DUMKla-a citizen of the United States,residing at Mil- Waukee, in the county of Milwaukee and State ofWisconsin, have invented new and useful Improvements in PanoramicCameras, of which the following is a specification.

My invention relates to new and useful irnprovements in panoramiccameras, and it consists in the matters hereinafter described and setforth in the claims.

In the accompanying drawings illustrating my invention, Figure l.represents a top view of the camera with a part of the case broken awayto show the interior. Fig. 2. is a front elevation. Fig. 3. is alongitudinal vertical section drawn on line .ma of Fig. 1. Fig. et. is abottom view of the supporting frame and bellows, showing the device foradjusting the lens. Fig. 5. is a detail showing a rear view of one endof the adjusting mechanism shown in Fig. 4.

Like parts are represented by similar ref erence letters throughout theseveral views.

In the drawings the stationary frame A, the semi-circular case B, thelens tube C, the lenses D and Eand the so-called bellows or flexiblefolding case F, are all constructed in the ordinary manner.

The lens tube is connected with its supporting bearings K and L, whichform its center of rotation, through the swinging arms M d and N and thelens supporting plate O.

P represents a slot which is formed through one side of the lens tubefor the reception of the perforated diaphragm I. To enable me to thussupport the lens tube in the rear of its axis of rotation and at thesame time to exclude the light, a flexible curtain Q is provided. Thecurtain Q is centrally aiiixed to the lens supporting plate O, and itsrespective ends extend toward the right and left out in front of thecamera frame, at which point they enter the curtain receptacles R R.Thus it is obvious, that as the lens tube is swung on its vertical axis,one end of the curtain Q is drawn outward and rear-ward from itsreceptacle, while the other end of the curtain is forced forward andinto the other recepta cle. The curtain Q is preferably formed of aseries of narrow strips of wood secured to a flexible fabric.

The lower supporting axis or bearing L of the lens tube, rests in thesocket a 'provided therefor in the upper end of the mov able slide S.The upper bearing or axis K extends above the housings through thestationary boxes T T. Thus it is obvious that the lens tube may be movedbodily upward or downward with the supporting bearings and attachments,by raising or lowering the slide S. The slide S moves in the guide waysU, and it is provided with the-lifting arm V and the lock-nut W, whichlock-nut is adapted to be screwed down and upon the lifting arm Vagainst the front surface of the guide ways U, and thereby locks theslide S at any desired point of adjustment.

The upper end of the axis or bearing K is provided with an operatinghandle A by which the lens-tube is turned on its support. vTo the innerside of the lens plate O is attached a narrow outwardly diverging hood Bto the free end of which is adj ustablyattached another hood C. The hoodB is adjustably connected with the hood C by the retaining ribs or waysD', which engage in the inclos ing flanges or guide ways E and permitthe hood B to be raised or lowered with the lens tube as may berequired, while the hood C remains at rest. lt is obvious that as thehood B is raised or lowered, a space is formed between it and the upperand lower walls of the hood C. These spaces are closed by the flexibleaprons E which are attached at one end of the walls of the hood B',while their when taking a picture it is necessary to ex- 9 yclude thelight from the gelatin plate, until after the beginning of the movementof the lens across the field or view which is being photographed. Toaccomplish this obj ect the hood C is provided with two swinging doorsIOO J J which are respectively hinged to the re' spective vertical sidesK K of said hood.

As a substitute for the ordinary metallic hinges for supporting thedoors J J, l preferably use a strip of cloth or other flexible fabric Lwhich may be glued to the contiguous surfaces.

The doors J J are provided with a spring actuated mechanism by whichthey are automatically thrown open the instant they are moved away fromeither side of the case and are closed as they approach either side.

The mechanism 'for opening and closing the doors J J is shown in Fig. l,and it consists of a T shaped plate L", provided with angular slots orguide ways lll M, and actuating arms N N. The plate L is supported fromthe upper end piece of the hood C in guide ways O O in which it is freeto move upward and downward. The upper end of the T shaped plate L isconnected with 'the respective doors J J by screws I P", which areloosely iitted at their outer ends in the slots M M', while the innerends of the screw 's are affixed to the ends of said doors J J Thus itis obvious that as said l shaped plate is moved upward, said doors J Jwill bc opened, and as said plate is moved downwart the doors will beclosed by the action of said slotted ways or bearings upon said screws.

Plate L is held upward and the doors thereby held open by the recoil ofthe spring R. The lower end of the spring it rests upon the uppersurface of the lower guide flange O', while its upper end bearscentrally against the lower surface of the actuating arms N N', wherebysaid doors are held open as stated, while the hood is being moved `fromone side of the inclosure to the other. When, however, the hood is swungto either side of the inclosure, one of the actuating arms N is broughtin contact with one of the roller stops S', whereby said plate L isthrown downward and against its supporting spring, when said plate,acting through the angular bearings or slots M and the screw bearings PP, cause said doors J J to be simultaneously closed. Nhen said hood ismoved outward and 'the actuating arms M released from contact with saidroller stops S", said doors J J will be simultaneously thrown open bythe recoil of said spring.

The roller stops S are adjustably attached to the lower side of the wallA by the lever B and centrallysupporting pivot C, whereby they may beadjusted in line with the circular line of movement of the dooractuating arms N, as the line of movement is changed when adjustingl thelens to the picture. The levers B are held at the desired point ofadjustment with ordinary hand screws D and the slotted plate E. Theslotted plate E is attached to the wall A upon the pivot F. The handscrews D operate in screwthreaded apertures formed in the levers B inthe ordinary manner, and they are adapted,

as they are screwed inward in their bearings, to lmpinge upon thesurfaces of the slotted plates E, and therebyhold said levers B at anydesired point of adjustment.

The gelatin plate ll with its supporting case is adjusted nearer to orfarther from the lens, as may be requirefhby turning the hand knob Gtoward the right or left. The hand knob G is affixed to one end of theshaft Il, which shaft turns in the journal bearings l I, and is providednear its respective ends with pinions J J. rlhe journal bearings l l arerigidly affixed lto the floor A of the movable case B and moves with itwhile the teeth ofthe pinions J J mesh into the tooth bars K K, whichbars are rigidly affixed to the stationary frame A, whereby as said knobG is turned toward the right or left, said case i3 is moved nearer to orfarther from the lens.

i/Vhen taking a picture the camera is eentrally supported upon a tripodin the ordinary manner by a binding screw operating in the screw fittedaperture H.

Having thus described my invention, what i claim as new, and desire tosecure by Letters Patent, iisl. In a panoramic camera the combination oflens tube C, tube supporting plate f), plate supporting arms N and hl,pivotal supporting bearings K and L, sliding curtain Q cei1- trallyaffixed to said lens supporting plate 0 and adapted to slide toward theright and left as said lens tube C is swung up on its supporting pivots,substantially as and Vfor the purpose specified.

2. ln a panoramic camera the combination of the swinging lens tube C,tube supporting plate 0, sliding` curtain t); centrally ailined to saidlens plate O, and curtain receptacles R R formed for the reception ofthe respective ends of said curtain, substantially as set forth.

ln a panoramic camera, the combination of the swinging lens tube U tubesupporting plate 0, vertically adjustable hood B, hood C adjustablyconnected to said hood B', hood supporting roller F', and flexiblecurtains lt, said curtains being adapted, as said hood B is raised andlowered to close the spaces between it and the upper "and lower walls ofsaid hood C, substantially as and for the purpose specified.

ln a panoramic camera, the combination of the swinging lens tube C,adjustable hood B, hood C adj ustably attached to said hood B', andadapted to be moved by the swinging movement of said lens tube and thetwo swinging doors J J', respectively connected with the respective sidewalls of said hood C and provided with an actuating mechanism forautomatically opening and closing said doors, substantially as setforth.

5. lin apanoramic camera, the combination vof the swinging hood C',doors J J', T shaped plate L provided with angular guide slots M M andwith actuating arms N N, plate sup- IOO IlO

1o reverse movement of said hood, said arms are released from contactwith said stop and said doors automatically opened by the recoil of saidspring R', substantially as set forth.

In testimony whereof I affix my signature in the presence of twoWitnesses.

FRANKE F. DUMKE.

Witnesses:

JAs. B. ERWIN, CLARE L. RoEsCH.

